Roof bar



FIG. 1 is a front perspective view of the roof bar;

FIG. 2 is a front elevation view of FIG. 1;

FIG. 3 is a rear elevation view of FIG. 1;

FIG. 4 is a right side elevation view of FIG. 1;

FIG. 5 is a left side elevation view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1;

FIG. 7 is a bottom plan view of FIG. 1; and,

FIG. 8 is a bottom perspective view of FIG. 1.

The broken lines are for illustrating functional features and form no part of the claimed design. 

CLAIM The ornamental design for a roof bar, as shown. 